Corrosion inhibiting pigment

Details Corrosion inhibiting pigment Corrosion inhibiting pigment

C - Chemistry, Metallurgy

08

K

31/38

C08K 3/36 (2006.01) B32B 15/04 (2006.01) C09C 1/28 (2006.01) C09D 5/08 (2006.01)

Patent

CA 1310820

ABSTRACT OF THE DISCLOSURE Corrosion inhibiting calcium-containing amorphous precipitated silica is described. The silica is prepared by admixing simultaneously in a reactor aqueous alkali metal silicate, e.g., sodium silicate, acidifying agent, e.g., hydrochloric acid, and a water-soluble source of calcium, e.g., calcium chloride. The product contains from 6 to 9 weight percent calcium (as CaO). The silica product may be incorporated into a coating composition used for corrodible metallic surfaces.

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